Hab. Java, Borneo, Sumatra, Singapore (Wall.), Moulmein (Brit. Mus.).

80. Papilio Gigon, n. s. Tab. VII. fig. 6 (♀).

P. Gigon,” List of Papilionidæ in Brit. Mus. p. 27 (no description).

Much larger than P. Demolion; costal margin of the fore wings very much arched from the base; tail proportionally shorter.

Upper side:—markings as in P. Demolion, with the following differences. In the cell of the fore wings are four longitudinal curved greyish-yellow lines; the yellow band begins higher on the abdominal margin, and curves outward toward the tip, where the spots are obliquely elongate, and the three last distinctly notched; on the hind wings the lunulate spots are much deeper and are rather further from the margin, and the two spots at the outer angle (often obsolete in P. Demolion) are large and well marked.

Under side:—the markings resemble those of P. Demolion, but are stronger; the band of silvery spots is much more sinuate, and possesses an additional lunule above the outer angle; a patch of ochre-yellow covers the lower margin of the cell, extending a little along the nervures which radiate from it.

Abdomen blackish, with numerous stripes and spots of pale yellow.

Expanse of wings 4¾ to 5⅓ inches.

Hab. Celebes, Sulla Island (Wall.).

Remark.—This was regarded by Boisduval as a large variety of P. Demolion (see Sp. Gén. Lép. p. 221); but it offers remarkable differences both in form and markings.